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Finding the Fourth Proportional to 64,961.60, 89,666.16 and 38,109.92

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Solution

The fourth proportional to 64,961.60, 89,666.16 and 38,109.92 is: 52,602.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,961.60 : 89,666.16 = 38,109.92 : x
  2. Step 2: Convert to fraction form
    64,961.60/89,666.16 = 38,109.92/x
  3. Step 3: Cross multiply
    64,961.60x = 89,666.16 × 38,109.92
  4. Step 4: Simplify right side
    64,961.60x = 3,417,170,184.31
  5. Step 5: Solve for x
    x = 3,417,170,184.31/64,961.60
  6. Step 6: Final answer
    x = 52,602.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.